Download JNTUH MCA 3rd Sem R17 2019 April-May 843AE Aprilmay Java Programming Question Paper

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Code No: 843AE

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R17

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, April/May - 2019

JAVA PROGRAMMING

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Time: 3hrs Max.Marks:75

Note: This question contains two parts A and B.

Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.

PART - A 5 x 5 Marks =25

1. What is the significance of Java virtual machine? [5]

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2. What are the uses of “final” keyword? [5]
3. What are the methods that support interthread communication? [5]
4. Explain Adjustment Event class. [5]
5. What is the difference between an applet and an application. [5]

PART -B 5 x 10 Marks =50

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1. List out various bitwise operators. Explain them with suitable examples. [10]

   OR

   Distinguish between data abstraction and data encapsulation.
   Explain about the type conversion with an example. [5+5]
2. What is a package? How will you define a package and import it.
   What are the benefits of Inheritance? [5+5]

   OR

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   How does Java support multiple Inheritances? Explain with an example. [10]
3. What are thread priorities? Explain with suitable examples. [10]

   OR

   Explain is Alive() and join() methods of thread class with suitable example. [10]
4. Distinguish between Text Field and Text Area classes. List and explain various methods of those classes. [10]

   OR

   Write about layout managers. [10]

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5. Write an applet which will scroll “Java programming” from right to left across the applet’s window. [10]

   OR

   Explain J Check Box and J Radio Button classes. [10]

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